CA1196387A - Signal interference protection circuit for am stereo receiver - Google Patents

Signal interference protection circuit for am stereo receiver

Info

Publication number
CA1196387A
CA1196387A CA000429897A CA429897A CA1196387A CA 1196387 A CA1196387 A CA 1196387A CA 000429897 A CA000429897 A CA 000429897A CA 429897 A CA429897 A CA 429897A CA 1196387 A CA1196387 A CA 1196387A
Authority
CA
Canada
Prior art keywords
stereo
signal
output
receiver
tone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA000429897A
Other languages
English (en)
French (fr)
Inventor
Lawrence M. Ecklund
Roy H. Espe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of CA1196387A publication Critical patent/CA1196387A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/44—Arrangements characterised by circuits or components specially adapted for broadcast
    • H04H20/46—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95
    • H04H20/47—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95 specially adapted for stereophonic broadcast systems
    • H04H20/49—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95 specially adapted for stereophonic broadcast systems for AM stereophonic broadcast systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Noise Elimination (AREA)
  • Circuits Of Receivers In General (AREA)
CA000429897A 1982-06-08 1983-06-07 Signal interference protection circuit for am stereo receiver Expired CA1196387A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/386,374 US4489431A (en) 1982-06-08 1982-06-08 Signal interference protection circuit for AM stereo receiver
US386,374 1982-06-08

Publications (1)

Publication Number Publication Date
CA1196387A true CA1196387A (en) 1985-11-05

Family

ID=23525326

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000429897A Expired CA1196387A (en) 1982-06-08 1983-06-07 Signal interference protection circuit for am stereo receiver

Country Status (11)

Country Link
US (1) US4489431A (ru)
EP (1) EP0110994B1 (ru)
JP (1) JPS59500795A (ru)
KR (1) KR860001325B1 (ru)
BR (1) BR8307398A (ru)
CA (1) CA1196387A (ru)
DE (1) DE3379373D1 (ru)
HK (1) HK25692A (ru)
MX (1) MX152521A (ru)
SG (1) SG17692G (ru)
WO (1) WO1983004459A1 (ru)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4716590A (en) * 1984-01-17 1987-12-29 Sansui Electric Co., Ltd. AM stereo transmission method and apparatus
US4653095A (en) * 1986-02-06 1987-03-24 Kahn Leonard R AM stereo receivers having platform motion protection
US5008939A (en) * 1989-07-28 1991-04-16 Bose Corporation AM noise reducing
US5151939A (en) * 1990-03-21 1992-09-29 Delco Electronics Corporation Adaptive audio processor for am stereo signals
ATE177887T1 (de) 1991-04-18 1999-04-15 Bose Corp Reduktion von hörbaren rauschen bei stereo- empfang
DE19630392C2 (de) * 1996-07-26 1998-10-01 Sgs Thomson Microelectronics Stereodecoder mit gleitendem Übergang zwischen Stereobetrieb und Monobetrieb
US6570500B1 (en) * 2001-11-09 2003-05-27 Nokia Corporation Infra-sound surveillance system
US8144878B2 (en) 2006-03-06 2012-03-27 Mediatek Inc. FM receiver and pilot detector thereof, and method for determining a type of a processed signal

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3944749A (en) * 1972-05-10 1976-03-16 Kahn Leonard R Compatible AM stereophonic receivers involving sideband separation at IF frequency
US4192970A (en) * 1977-01-31 1980-03-11 Kahn Leonard R Reduction of adjacent channel interference
US4332978A (en) * 1977-03-21 1982-06-01 The Magnavox Consumer Electronics Co. Low frequency AM stereophonic broadcast and receiving apparatus
US4159398A (en) * 1977-09-27 1979-06-26 Motorola, Inc. Stereo presence signal for an AM stereo system
US4169968A (en) * 1978-01-27 1979-10-02 Motorola, Inc. Noise protection circuit for am stereo cosine correction factor
JPS5735440A (en) * 1980-08-12 1982-02-26 Sony Corp Mode switching controller for am stereo receiver
JPS5780842A (en) * 1980-11-07 1982-05-20 Matsushita Electric Ind Co Ltd Pilot signal detecting device
US4379208A (en) * 1980-11-13 1983-04-05 National Semiconductor Corporation AM Stereo receiver logic
US4368356A (en) * 1981-03-20 1983-01-11 Motorola Inc. Pilot tone detector utilizing phase deviation signals

Also Published As

Publication number Publication date
KR860001325B1 (ko) 1986-09-13
JPH02903B2 (ru) 1990-01-09
DE3379373D1 (en) 1989-04-13
SG17692G (en) 1992-04-16
HK25692A (en) 1992-04-16
US4489431A (en) 1984-12-18
MX152521A (es) 1985-08-14
BR8307398A (pt) 1984-05-08
WO1983004459A1 (en) 1983-12-22
EP0110994A1 (en) 1984-06-20
EP0110994B1 (en) 1989-03-08
EP0110994A4 (en) 1985-09-16
KR840005289A (ko) 1984-11-05
JPS59500795A (ja) 1984-05-04

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Legal Events

Date Code Title Description
MKEC Expiry (correction)
MKEX Expiry